When the pressure gauge pointer of the fire extinguisher is in the green area, the pressure is normal, and the normal pressure value of the fire extinguisher is about 1.2-1.5mpa. If the pressure gauge pointer is in the red area, it means that the pressure in the bottle is not enough, which means that the fire extinguisher cannot be used normally; in the yellow area, it is overpressure, which means that the pressure is too high and it is prone to danger (but not too much overpressure can be considered normal).
Fire is a chemical combustion reaction, usually caused by a reaction between oxygen in the air and certain fuels such as wood or gasoline. Of course, wood and gasoline will not burn spontaneously just because they are in contact with oxygen. The combustion reaction will only occur when the fuel is heated to the ignition temperature.pressure gauge pointer puller
Fire extinguisher, also known as fire extinguisher, is a portable fire extinguishing tool. The fire extinguisher contains chemicals to save the fire. Fire extinguishers are solid metal cylinders filled with water or fire extinguishing materials. When the pull rod on the top of the cylinder is pressed, the high pressure generated will squeeze out the fire extinguishing agent inside the cylinder, which is similar to the way of spraying materials in a spray tank. The function of the fire extinguisher is to squeeze out the air and extinguish the fire without oxygen. Because carbon dioxide is a gas and will not remain, it can be used in electric fire to avoid damage to the equipment.
